Dredge



Sept. 20, 1932. w. B. MACAULAY DREDGE Filed June 2, 1930 3 Sheets-Sheet2 A TTORNEYS.

Sept. 20, 1932. w. B. MACAULAY DREDGE 3 Sheets-Sheet 5 Filed June 2,1950 y j, m @MA n um i N me R Vw m WW .HM m W lllllllllll Il W `|I|||1 Hun H w: m RS M SQ W a.. www mi m Wm. J f mw .Q @E |l| w k r a W mm mm QW L RQ x .NQ I l l l Il ll Il WS w m@ L? \\.m\ mg mg m.m\ .NN OQ u Q\lwlHnrN \m.\ mm

Patented Sent'. 2 0, .1932", 'Y

- to operate onbodies'ofvvater, `eithernatural f or artificiel, for thepurposefofz removing ing machinery is-loe'tedeand vvhiohfi's poshv Y orpaying .outeelected ones of the kcablesvin'V order to loetethedredge forthemost ativan-5 1` tgeous 'operation and alsosfor propelllng the dredgefrom Vonefloeetionto another v on the tioned areof 'considerablesiz'eandthe--mech'V 'anis'mjfor hendling-- the cbles and-for maneu- 20complexity and of the 1 11 1 1`nerous:lA` controls necessary; VSuchl Adredgesv often areV utilized. Y25

i tionis not of the highest end 'njfvvhioh the ilaboroanyfoharaterf-Irfthe pstin order- Og dredge bywirme 'Of-thefreer-that the' ense, ef"

tending from .their hull toi suitable'boints off tomarily are used andthere isordmarlly pro-l f gprovideie dredge in vvhiehthe'nianeuverabili4ity. of 'the dredge isY improved over previous v-praetce.n T

videfa` "dredge-whioh banbe maneuvere'd withv ajveryfmuoh smallerierevvthan'fusuaglgf'npthe Y j "Drinnen:

App'nation manne 1930.A` `seria No."458,985; preferred vcase necessary.Y f

A further object of my-invention'isfto'pio- Vide ,'nechanism forcontrolling the (jlredgelofv such L nlturelthatthephysiealieffort'involved in .operation'is reduced't s'rninimurn. Anadditional objec'tfofniy 'invention-is l.toVprovide'epoweriopereteddredge'eontrelsuclr i thatznofdamagecanooeuriit'rthe powerfsupf ply'shouldifil.' 6'0" z The lforegoing f andother :Objew ere?- utf1 f tined lin! the embodiment" of the in'ventionrinvention relates to v dredges .idapted' Signez-@lue earth orsimilar-materiel .frorn'fbeneztthithe surface of the Water. Dredgesaofthis. type usually comprise: a; hullon Vwhichthedredgtioned foroperationv by ineens' ofeagbles exi anehorage; A pluralityfofsuch fcables eus?` vided on `the 'hull Vmachinery for haiulir'lgffin showninthe "drawings, in Whichr Fig-:1 is a Sideelevationefffrp'quienQ-frjief cable 11emev .includedinehe:dredgeshowingff i body of WatenfDredges 'of the` type nienhere? climateall;butpreoludesfstrenuous yphysical V to operate it allgevenvvithinclifl'erentsuoij Veessgit has been Vnefees'saiyjtolernploy large' revvof operators usuellyfvvi-th each operatoriY essignedfto a p ufteu lar`duty *in gconne'etier'1 Y .the dredge. Not onlyis the physical laborAlhough th-dredge--of-m 1 being operated'-vvithjgreat"-advatntege La?provided which is capable yof connecting the drum 7 to or disconnectingit from a gear 12. The clutch is of any preferred type and is providedwith .an actuating collar 13 whichv in one position permits engagementof the clutch to transmit power from the gear12 to the drum 7 and inanother position disengages the clutch to prevent the transmission ofpower from the gear 12 to the drum 7.

Also associated with the starboard bow line drum 7 is a brake 14 of anydesired kind and in the present instance comprising a friction bandengageable with the drum 7 to constrain undesired rotation thereof. Thebrake 14 is controlled through a lever 16 so that in one position of thelever `the brake is applied and in another position of the lever thebrake is released. f. f

Arranged on the framework 6 parallel to the Vdrum l7 is a port bowflinedrum 17 mounted on` a shaft 18 kjournalledin bearings 19 and 21 securedto the framework 6. The port bow line; drum 17 Vis provided with aclutch 22 operated by a clutch collar`23 inthe customary fashion, and isprovided with a` brake 24 responsive to a brake lever'26.. The drum 17is connected through clutch 22 with` a gear 27 mounted on the 'shaft18,;and meshing with gear 12. l

In asimilar fashion5a starboard stern line drum 28, journalled as at 29and 31o=n the framework-6, is providedwith a. clutchl 32 controlled byaclutch collar 33 and is yprovided witha brake 34 actuated by. a brakelever 36, so that thed-rum 28 can be connectedV` or disconnected, as Ydesired, from shaft. 37 mounted in the journals 29 and 31 and canrberetarded frictionally by, means of the A brake 34. A" gear 38deconnected to- ,the shaft' 37v and meshes with gear 27.

InV a comparable manner a :port stern line drum 39 is freely rotatableon a vshaft v41 mounted in bearings 42 and 43 on the framework 6, Forconnecting the shaft 41 with the drum 39 a clutch 44 is providedwhich-is actuated through the medium of aY clutch collar 46. The drum 39is likewise provided with a brake 47 actuated by a brake lever 48 whilepower is transmitted to shaft 41 by a gear 49 meshing with gear 38 and`likewise meshing with a pinion 51v secured at the' extremity o-f a shaft52Awhich in turn is journalled as at 53 Vand 54 in the framework 6. Y

In parallelism with the drums vpreviously described is a head line drum56 freely rotatable on ashaft 57 mounted in bearings y58 and 59 on theframework 6 and carrying Vat one Aextremity a bull gear 61. At oneSideof the head line drum 56 is abrake 62 controlled through a brakeshaft 63 for selectively offering frictional retardation to the drumV56.

Meshing with bull gear `61-and freely rotatable on shaft 52 is a pinion64 connected to the driven member of-a clutch V66 likewise mountedonshaft 52.V 'Ihe driving member frame 74. Also'mounted on shaft 71 is avgear 76 and a larger gear 77. 'Ihe gear 76 vmeshes with a gear 78 ofapproximately the same pitch A, diameter freely rotatable on a shaft 7 9journalled at 81 and 82 in the auxiliary frame 74. Meshing with the gear77 is a pinion .83 of considerably smaller pitch diameterzwhich likewiseis lfreely rotatable on shaft*v 79. In vorder to transmit drivingpower-from shaft 79 vthrough gears 78 and 76 as a unit or optionallythrough gears 83 and 77 as a 'unit' in orderto provide two different'speeds of-drivefor the shaft 52, I mount a pair of clutches`86 and" 87on the shaft 79 for alternative engagement lwith the gears 78 and 83respectively; d i

, In accordance Lwith my invention I provide means for selectivelyactuating any desired one or any ,desired plurality of the variousclutches-pand brakes heretofore described.

The operating means is preferably pneumatic so that the actual forcevrequired of the operatorto operate anyone or Amore of the unitsvis'derived from a mechanical source and is" independent of substantialhuman labor.v `Furthermore, I provide controllers for theivariousvunitsiin such a fashion that the pneumatic force available is controlledfromasingle point'or location,v usually remote from the lineedrumsdescribed, and convenient for actuation by ofthe dredge i #At a suitableplace 'on the hull of the the chief operator dredge I provide a sourceof pneumatic Pres- Y sure such as ian'rair` compressor 91 formalntaining an airreservoir 92 .in operating condition. A main conduit93 leads from the reservoir 92 vto the control house or other selectedpoint on the dredge for centralized op.- eration.. :Connected to. themain 93 is a clutch control valve 94 which vin one position of thecontroller such as 96divert-s air from the main y93 into a duct y97leading to apneumatically expansible chamber 98 which is line Ydrum56and iseffective when expanded to vengage the'clutch'for transmittingpower from `shaft 52 tothe pinion 64'to rotate the drum`56in yaccordancewith the rotation of the shaft;A Y Y In vanother'position of thevcontroller 94, a position such as V99, for instance, air is taken fromvthe main. 93 and Vis passed through a conduit 101 vleading toa'pneumatically eX- pansiblel chamber 102 which, when expanded,

connected to the clutch collar 67 ofthe head operatesthe clutch collar"67 to releasefor dise A engage theV clutch;` 6,6` so that no vpower VissoV :brake lever `26 foroperating thebrake'whic'h can,` if desired', befurnished'with unidirec-x tional bias weights,las previously described.

' fromthe main 93. f

transmitted between the shaft-52 and theV headline drum:56. Byjvirtue'of this ar' i rangement there is under `control of a single il.operator the entire ,operation'of the clutch controlling theyfunctioning! of the head' line drum. y y f i "To supplement the power4drivegand to afi `ford an additional 'controloverj the drum 156 isavailable the drum 5 6 cannot inadvertently be rotated. For expanding'therchamber Y 103'I connect yitfthrougha conduit 106 with a brakecontroller 107 preferably provided*V with a `gauge 108 andA recfe'iving.pneumatic g' pressure fromthe main 93. The; controller I 107 is suchYthatpneumatic` pressure can Se-fi lectively be applied-to the .chamber1031`to f f operate the brakef62 in thefdesiredmanner,`

and amount.

drum 17 I. provide pneumatic Vchambers 107 and 109 leading'respectivelythrough conf duits 109 and 111`to a clutch controller 112 receiving airfromjthe--main 9.3 andcapahle of transmitting pneumaticpressureaselectively' to the chambers; 107 and'109 for shifting theQVclutch .collar 23 to'engagedor disengaged Ipuf.; sition of the clutch.'lfherejis alsoprovided.

'an expansible chamber1-13-connected to the."

The Vchamber 113receives pressurethr'ough a duct 114 leadingtoabrakevalve 116 atthe selected po-intfof `control, the brake `valvebeing supplied with pneumatienpressure The starboard stern' lineddrum,isilikewisei` connected by its clutchcollar133 to pneumatif callyexpansible chambers 117" andfljl4 re spectively connected` through ducts11-9-f-and 121 to aelutch controller122receiving air .fromrtheinain 93andcapable of transmit.- f `tingthe-,pneumatic pressure selectively to!L`either of-'the 'chambersf117 andf11`8- The-"1i bl"'361 Vtl V'tb w m eleven of le S M' Oard'st'ervl' meins not-permittedtoshift.itsfpositionzor to4 l drum 28isconnected toa pneuin atically,eX-pansible chamber 123 providedwithV a con! also connected to the'm'ain93-andcapable of expanding or contracting the chamber 123- vat the willof the operator. Biasi'ng nieans,-'

such as the described weights,are`}optionally utilized withbrakev 34. fj

similary `fashion,the[portfstern.lineA .cally expansible chambers 127and :l128lconl drum a9 isrproviaea with a paiffeffpnumar.

Vnefcted tothe clutchfcollarfan-d 'i veating. rthrough ducts f;1 29and`131 withj 'a pressureV from'1the1main 93 andgcapableofse Y' f ber 133-o'f'the sainefpneumatically vexpanding Connected through-'affamata131tea brake controller -1-36fjoinedfto' the supplyf'main `93 fand-'effectiveto fapply or Ereleaseb'ralfte"4710611 i tionallymaintainthe'bralenormally'applied."

, lfhestarboardfbowline drum clutchll '-i's controlle'di byta`pairofrpneumatic chambers .137; andl 138 "connected through -ducts-f139and 141 with-a vclutchf`c'ontroller11421in communicationwiththemain93-iand having-two f Positions tofcntrol Sele@tively`the'chambers v i' l37ancl138to ac ,tuat'ev thestarboard bow line ldrumclutch in the "desiredfasli-ion. .The asso# i v146icommunicatingwithiniainf93g -ciated brake 14,y 'optionallybiase'df to" applied ,if dl I' 'Y l position,aisactuatedjby aniexpansiblecham@V.ber-14sOiiieabya'pipe.mimManueller:

lNTotpnly.'d'ofI` control thevariousf'cable 1drums.pneumatically invaccordance with` my In a similar fashion on-the port bowzline"troll'e'din opposite Sense afpair of V,pr'jieu-V .mat'ically le'2;pan-sible chambers 147 and .148,1- which: are connected through kpipesY149v andi llftofaf clutch controller 152 joinedltothef" main 9 3andcapable'of @ausingtliechambersV f f V 147and148,selectively toeXpandforenUagfingfeithertheclutclif 86. or theclutch 8? to 5 trans'mitthepowerf'at the-desiredspeed.ratio. f Y

`In accordance witli my inventionjI-have gdrumpneumatically and the`change speedf? gearing in a similarlfashion." -`l lie s'peed clutches'Gand-'.87aref2sinfiultaneouslylcon1 Qi" i n provided on a dredge meansfor controlling a power-f5 romvany cause whatsoever the dredge wreckitselfy but the A'drumjbrakes are .alllauduit 7.124. leadingV to avbrake controller126 `tomatically applied andA thejdredge held inplae,Pending ,prperieSumptOn ofoperain the following claim may be embodiedina plurality of forms. f I claim: l o Y `A dredge comprising al cabledrum, means V5 Jor driving said cable drum, a change-speed gearinterposed between said driving means and said drum, a clutch interposedbetween said change-speed gear and said drum, means including firstpneumatically expansible chamber `for engaging said clutch, meansincluding a second pneumatically expansible chamber for disengaging saidclutch, a brake Y `for frictionally const-raining said cable drum, meansfor normally vapplying said brake, means lincluding a thirdpneumaticallyl eX- pansible chamber for lreleasing said brake, meansincluding Va fourth pneumatically expansible chamber for operating saidchange speed gear in one position, means including a fifth pneumaticallyexpansible chamber for operating said change-speed gear in anotherposition, and grouped pneumatic controllers for controlling said firstto fifth, inclusive, of said expansible chambers. f

ln testimony whereof, :have hereunto set myhand." y i 4.

' v WALTER B. MACAULAY.

